Patents by Inventor Jorma Tapani Lehtonen

Jorma Tapani Lehtonen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Centrifugal pump, a shaft sleeve and a stationary seal member
    Patent number: 9353763
    Abstract: The present invention relates to a centrifugal pump, a shaft sleeve and a stationary seal member for a static seal used in connection with a dynamic sealing of a centrifugal pump. The invention relates to a static seal the clearance of which may be adjusted while the pump is running. Especially the invention discusses the novel structure of such a static seal.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: May 31, 2016
    Assignee: Sulzer Pumpen AG
    Inventors: Jorma Tapani Lehtonen, Heikki Manninen
  • Centrifugal pump, a shaft sleeve and a stationary seal member
    Patent number: 8337152
    Abstract: The present invention relates to a centrifugal pump, a shaft sleeve and a stationary seal member for a static seal used in connection with a dynamic sealing of a centrifugal pump. The invention relates to a static seal the clearance of which may be adjusted while the pump is running. Especially the invention discusses the novel structure of such a static seal.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: December 25, 2012
    Assignee: Sulzer Pumpen AG
    Inventors: Jorma Tapani Lehtonen, Heikki Manninen
  • Centrifugal Pump, A Shaft Sleeve And A Stationary Seal Member
    Publication number: 20090116960
    Abstract: The present invention relates to a centrifugal pump, a shaft sleeve and a stationary seal member for a static seal used in connection with a dynamic sealing of a centrifugal pump. The invention relates to a static seal the clearance of which may be adjusted while the pump is running. Especially the invention discusses the novel structure of such a static seal.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 7, 2009
    Applicant: Sulzer Pumpen AG
    Inventors: Jorma Tapani Lehtonen, Heikki Manninen